Why abolish the purser's allowance for spoilage?

How could the purser's pound be abolished if it protected pursers against spoilage?

Better storage, preservation, and logistics had reduced the spoilage risk, making the old allowance arguably unnecessary.

The two-ounce allowance originally protected the purser against a greater risk of food spoiling. Improved storage, preservation, and logistics reduced that risk. On this assessment, the allowance had probably been unnecessary for several wars before its abolition. The purser could consume the retained food, sell it, or declare it spoiled, so an older protection could become a personal benefit.